Tank.



PATENTED MAR. 13, 1906.

`J. l WALLACE.

'1' A N K APPLICATION FILED 00T. 18, 1904.

llllmmmMmmm Illllilllllillllllllll UNITED STATES OFFICE.

Specification of Letters Patent.

ratented March 13, 1906.l

Application filed October 18, 1904. Serial No. 228,932.

To ILM whom it may concern.: Be it known that I, JOHN W. WALLACE, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, havel invented certain new and useful Improvements in Tanks, of which the following is a specification.

My invention relates to the construction of the heads or bottoms of tanks, vessels, or barrels made of metal, usually of steel, and designed for holding and transporting aerated liquids, oils, chemicals, 'lacquers, `varnishes, and the like. Such vessels, especially when filled, are subjected to great stress of interior pressure and to excessive jamming and wear, particularly at the chime, which is likely to break the seam and cause leakage. They are expensive to manufacture, and in case of any defect in the attachment of the head or bottom to the body of the vessel the whole becomes practically useless and in case of high interior gaseous pressure dangerous.

By my invention I am enabled to manufacture metal tanks, casks, or vessels, usually termed steel tanks, which ossess great strength and durability and which will stand rough usage and in which the work of soldering or brazing the head or bottom on the body can be cheaply, perfectly, and reliably done. i

In the'accompanyin drawings, to which reference is made and wi specification, Figure 1 is a sectional elevation of a portion of a body of a vessel, tank, or barrel, showing a head or bottom applied thereto in accordance with my invention. Fig. 2 is a like view showing a modification.

In the drawings, 2 designates the body of the vessel or tank, and 3 the head or bottom thereof, it 'being understood that the opposite end of the body may be finished in du licate or in any other desired manner. he body is of metal, preferably of cold-rolled steel, and the head or bottom is by preference of like `material, preferably stamped up in a die or otherwise formed, with an outer flange 4 and an inner flange 5, both formed as a part ofthe head or bottom proper, which is elevated in the body of the tank. The body 2 and a reinforcing piece or member 6 are soldered or brazed in the space between the said inner and outer'flanges 4 5. The reinforcement 6 is by preference in the form of a circular angle-iron having the said memberl 6 and a horizontal member l7, and by preferch form part of this y ence the bottom 3 is depressed, as shown at 8, to receive the said horizontal member, so that the upper surface of the angle-piece will be flush or substantially flush with the inner surface of the bottom 3, and said depression 8 is by preference made on a greater angle than that of the angle-piece, so as to form a space to receive a body of brazing metal or solder 9, as shown. In Fig. 2 the reinforcement is shown as being formed of a metal ring; but I prefer the angle form shown in Fig. 1, since the horizontal -portion thereof resists internal pressure and greatly strengthens the bottom and bodyof the structure.

The parts being completed to fit one` another, they `are ut together and the whole placed upon a evel support or table, and

theyare soldered or brazed together by heatl ing and flowing the metal in at the upper edge of the outer flange 4, andfoi` this -urpose the upper edge or the lowest'part o the 4upper edge ofthe outer flange 4 is made on a level to'which itis desired to have the solder or brazing metal flow in the spaces between the body, the reinforcement, and the flanges 4 and--that is to say, as here shown, thel upper edge of the outer flange 4 is on a level with the elevated bottom 3. The soldering or brazing metal forms three layers 10 12 13y and unites the six surfaces of metal, and when the slpaces are filled the solder or brazing meta will overflow at the top of the flange 4, and thus indicate that the soldering or brazing is perfectly done throughout. In this way not only is the tank bottom or head perfectly soldered or brazed to the bod but the chime is of great strength and durability Iand no jamming or pressure can art the seams.

In order to facilitate the ow of solder or brazing metal, I form openings 14 15 through the body 2 and through the reinforcement 6, as shownin dotted lines in Fig. 2.

Having thus described my invention, what I claim as new, and ,desire to secure by Let- 1. A metal vessel comprising a main body,

a bottom elevated in the body and formed with integral inner and outer flanges, the upper ed e of the outer flange being on a level with t e bottom and spaced from the inner flange, and a metal ring, the lower edge of the main body andthe Isaid ring being inserted in the space between the said flanges and sola bottom elevated in the body and formed piece the vertical member of which is brazed with inner and outer anges and an angleor soldered together With the main body in piece, the body and one member ofthe anglethe space between the said flanges the horipiece being, soldered or brazed together bezontal member of which overlies the said de- 5 tween the said flanges, substantially as pression in the bottom and braz'ed or sol- 15 shown and described. dered thereto, substantially as described.

' JOHN W. WALLACE.

3. A metal vessel comprising a main bod y, l l a bottoni elevated in the body and formed .Witnesses: -With an inner and outer flange and-depressed H. A. WEST, 1o adjacent to the inner ange, and an angle- EDWIN VANDEWATER 

